R&D Study to Evaluate Cordio's Usability and to Collect Patient Speech Utterances

Major inclusion Criteria:

1. Adults patients

2. Diagnosed with Symptomatic Chronic Heart Failure [NYHA II-IVa (ambulatory)]

3. At least one of the following:

4. One ADHF hospitalization in the last 12 months

5. One unplanned IV/SC diuretic administration in the last 6 months

6. Two unplanned IV/SC diuretic administration in the last 12 months

7. NTProBNP >500 pg/ml or BNP*> 150 pg/ml at screening visit

8. Clinically stable HF

9. Willing to participate as evidenced by signing the written informed consent.

10. Male or non-pregnant female patient (pre-menopausal women will confirm verbally).

Major exclusion Criteria:

1. Not able to read in Hebrew, Russian, Arabic, English and/or Spanish.

2. Unable to comply with daily use of the App

3. Major cardiovascular event

4. Had a Cardiac Resynchronization Device (CRT) implanted or upgrading ≤ 1 month priorto screening visit.

5. Has estimated Glomerular Filtration Rate (eGFR) < 30 ml/min/1.73 meter square (Cockroft-Gault formula).

6. Is likely to undergo heart transplantation/ LVAD within 6 months of Screening Visit.